Already, Austin Collie has missed five games this season with concussion symptoms, and in his return to the field today, he showed why the Colts had missed him so much during his absence.

Late in the second quarter, he had accumulated eight catches for 87 yards and two scores as the Colts took a 14-10 lead heading into intermission.

But as the Colts were driving late in the second quarter, Collie got crushed again, stayed down for a few minutes and then slowly walked to the locker room. At this point, there's got to be a question of whether Collie can - or should - return to play this season.

Running a vertical route and covered by Jacksonville’s William Middleton, Collie dove for a Peyton Manning pass but took a shot to the head by Jaguars LB Daryl Smith. It wasn’t a helmet-to-helmet hit and it wasn’t illegal, but it was still awfully scary for Collie.

He stayed on the turf several minutes before trainers helped him into the locker room. As he left the field, Middleton and Smith both patted him on the backside.

No word yet on his condition. UPDATED (2:37 p.m.): Collie has suffered a concussion, and officials say his return is doubtful.

FORT WORTH, TEXAS -- You could forgive Wayne Weaver for having more on his mind than labor negotiations these days. After all, the Jacksonville Jaguars are on the verge of a historical moment, having a shot to win the AFC South for the first time (though they do own two AFC Central titles) in Indianapolis this weekend.

That's not to say Weaver isn't concerned about the labor issue. Obviously, he is. But his eyes lit up when asked about how the Jaguars -- and their fans -- have responded to the challenges they've faced in 2010.

"This group of men are one of the best groups we've had in my 17 years of ownership of the team," Weaver told CBSSports.com following the owners' meetings. "They're working hard and playing together as a team. They're focused, they've got great leadership with guys like Maurice Jones-Drew, Marcedes Lewis, Daryl Smith -- I could go on and on and on listing them.

"We're coming together as a team at the right time and we know we have to take one game at a time to use the old cliche and this game coming up is really important. We know we have to go and win."

Of course, the players aren't the only ones who have responded in a big way throughout 2010 -- the city of Jacksonville and the fans have done an absolutely outstanding job of supporting a team that, at one point, appeared dead in the water. (That point was the Monday night loss to Tennessee for those wondering.)

Instead of giving up on what might have been a lost season, they rallied and made sure to remind the NFL-watching world that Jacksonville, despite the complaints of some, is an NFL city thru-and-thru, by selling out every single home game in 2010.

"Well, think about this -- we blacked out seven of our eight games last year and we haven't blacked out a game and we've already sold out our Washington game," Weaver told CBSSports.com. "So we're not going to black out any of our home games this year.

"The community has really stepped up. They've been great 12th man fans and I couldn't be more proud of the way the city, our mayor, our city leadership have stepped up, because it couldn't have happened without all of that coming together."

The fans won't have a chance to fill up the stadium Sunday, but the Washington game, if the Jaguars play the Colts as close or closer than they always do, could be a pretty nice little reason for Weaver, the fans and the city to celebrate an already fantastic season.

Combined, these two teams have a stunning 28 players on their injury lists.

For the Colts, RB Joseph Addai is doubtful with a neck, and though his replacement, Mike Hart, has performed well, he also is on the injury report – questionable with an ankle (he didn’t participate in practice at all this week). He probably won’t play either. Which means that Donald Brown likely will start and get some help from Javarris James.

Another potential problem for Indianapolis is that starting LBs Clint Session and Gary Brackett (toe) are listed as questionable. Session dislocated his elbow a couple weeks ago, but somehow he found a way to play through the rest of the game. Which was pretty amazing. Of course, he hasn’t been seen since, but still.

The Bengals secondary, meanwhile, won’t have much depth. Starting FS Chris Crocker is doubtful with a bad calf, and nickel back Morgan Trent (knee), who originally was listed as questionable, was downgraded today to out. QB Carson Palmer, who didn’t practice Wednesday or Thursday, is listed as probable with a right shoulder injury.

Houston WR Andre Johnson, who was listed as questionable and who seems to be fighting injuries every week, apparently will start. Which is nice of him, one supposes. But TE Owen Daniels, battling a bad hamstring, will miss his second-straight game. To replace him, look for Joel Dreessen (five catches for 67 yards last week) to get the start.

Now that the Sidney Rice question has been answered – he’s still not recovered from hip surgery and will NOT be active Sunday – we can look to the other two Vikings WRs on the injury list. Namely Percy Harvin, who’s been bothered by migraine headaches this week, and Bernard Berrian, who has a groin issue. Both are listed as questionable. Will Brett Favre have anybody to whom he can throw?

Bears C Olin Kreutz is questionable to play with a bad hamstring. He didn’t practice Wednesday or Thursday, but he’s expected to play anyway. And Chicago will need him. Minnesota recorded six sacks last week, and the Vikings will be looking to take down Favre as much as possible.

As the Yo Gabba Gabba show progressed Wednesday night at the Times-Union Center for Performing Arts in Jacksonville, the concert-goers received a thrill when Jaguars LBs Kirk Morrison and Daryl Smith emerged from behind the curtain to participate as Dancey Dancers in the nearly 90-minute show.

Check out video of the results below from the Florida Times-Union website.

Apparently, Morrison and Smith took part in what’s called the “Peanut Butter Stomp.” And they seemed to perform it well. That, at least, was 5-year-old Camille Heidel’s take on the matter.

“It was good,” Camille told CBSSports.com in a phone interview early Thursday afternoon.

Her father, Lee Heidel, was a bit more forthcoming about the impact of Morrison and Smith on Wednesday night’s tour stop.

“Other than Biz Markie, they got the biggest pop of the night,” Heidel said. “Camille has been into Gabba for a couple years, and if you look at the itinerary and you see who the musical guests are and who the Dancey Dance guests have been, it’s pretty cool. And usually the guests have kids who are about that same age. So, if you’re on the stage with the Gabba friends, you’re doing pretty well in their eyes.”

Titans QB Vince Young left the Monday Night Football game with 8:15 to play in the first quarter after he sustained a lower left injury while trying to recover a botched snap.

After fumbling the snap, Young actually recovered the ball and tried to move forward into the line of scrimmage. But his knee bent awkwardly, and Jaguars LB Daryl Smith twisted him around while trying to tackle him.

Young limped off the field under his own power, and the fumble was overturned.

Tennessee’s training staff has put a brace on Young’s left leg, and he’s currently walking the sidelines as he watched backup Kerry Collins try to lead the Titans down the field.

People who closely follow the Jacksonville Jaguars spent the offseason talking about Kirk Morrison. The former Raiders linebacker was traded for a mid-round pick to come in and solidify Jacksonville’s Mike position. Morrison’s presence keeps super steady veteran Daryl Smith on the strong side and pushes athletic fourth-year pro Justin Durant to the weak side. All in all, it’s not a bad outside linebacking duo.

But the linebacker Jaguar fans should be chattering about is Russell Allen. Thanks to a rash of injuries, the undrafted second-year man from San Diego State started games at all three linebacker positions last season. Allen’s attacking, downhill style consistently stood out on film. It was a refreshing change from the read-and-react tendencies of so many of his teammates.

“I think (attacking ballcarriers) is just in my nature,” Allen says. “The object of playing defense is to attack the offense and get them off the field.”

Last season, Allen finished fifth among NFL rookie linebackers in tackles per start. Now, he is competing for a starting job, which means he’s also competing against pro football politics. Morrison is being trumpeted as the new centerpiece. The reality is, Morrison lacks instincts and lateral agility. But the Jaguars would never admit that now. Smith is a veteran and former second-round pick who won’t be benched. Durant, the guy Allen is competing with most directly, was also a second-round pick.

Allen understands the uphill nature of his battle for a starting job. “I have to be clearly better (than the current starters),” he says. “Obviously our coaches are fair and they want to win and they’re going to put the best guys out there. If it’s neck and neck, there’s really no reason (for coaches) to make a change. I have to be head and shoulders above the other guys ahead of me.”

Last season, he was. This season, his versatility will get him on the field at some point (nickel packages if nothing else). But if performance is truly the only measure, it’s hard to believe Allen won’t earn a first-string job.